Filtering and drying apparatus.



E. N. TRUMP.

FILTEEING AND DRYING APPARATUS. APPLICATION FILED 1'23. 17, 1896.

963,186. Patented July 5, 1910.

2 SHEETS-SHEET 1.

WITNESSES: IN\;E,NTOR

MZJ W I BY ATTdRNEYS.

E. N. TRUMP. FILTBRING AND DRYING APPARATUS.

APPLICATION FILED 1'33. 17, 1896.

Patented July 5, 1910.

2 SHEETS-SHEET 2.

INVENTOR MW.

mm 7 E S M N Hum, W I.

ATTORNEYS TINITED STATES PATENT OFFIG a EDWARD N. TRUMP, or s ancusnynnw Yonzg'a ssr'qnon 'ro THE SOLVAY rnocnss 1 company, or SOLVAY, NEW YORK, A ooaromrron or NEW YORK.

" the same, which is IFIIA'l'lEIBJNG AND DRYING APPARATUS. I

Specification of Letters Patent.v

' Patented July 5, 1910.

Application filed February 17, 1896. Serial No. 579,476.

To all whom it may concern:

Be it known that I, EDWARD N. TRUMP, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Filtering and Drying Apparatus, of which the following, taken in connection with the accompanying drawing, is a full, clear, and exact descri tion.

My invention has for its object t e productlon of an apparatus for removing apre- .cipitate from the mother liquor and dr ing particularly adapte for the manufacture of icarbonate of soda, and which requires a minimum amount of attention, and is capable of roducing a "maximum amount of materiai in a given time; and to this end it consists in the combinations and constructions hereinafter set forth and claimed.

I11 describing this invention, reference is had to the accompanying drawing, forming -a part of this specification, in which like letters desi gnate corresponding parts in all the views. A

Figure 1 is an elevatlon, partly 1n sectlon,

of my improved drying apparatus. Figs 2' and 3 are vertical sections, taken, respectively, on line 22, and 33, Figs; 1 and 2.

Fig. 4 is a top plan of one end of my improved drying apparatus; and Fig. 5 is a detail transverse section, partly in elevation,

' taken on line 55, Fig. 3.

My present invention is provided with vanous means which. revent undue clogging or fi termg surface, remove of the dryin the material fromthe perforations .or interstices of said surface, .thorou hly wash the drying or filtering surface, agitate the mate-- rial to be dried, and insure its adhesion to The filtering body in a substantially uniform a er.

X is a receptacle of any desired form, size,

and construction into which is inserted by any suitable means, not necessary to herein illustrate or describe, the moist or fluent material, as a mother liquor in which the preci itate or other matter to be obtained and ried is suspended. The receptacle A is preferably provided with an overflow a which may be dispensedwith, if desired.

B is a filtering body of any. desirable form, size, and construction, by. which the matter-to be obtained and dried, as bicarin the bicar v bonate of soda, is carried out of the mother liquor, said bod having a portion of, its surface movable mto and out of the moist or fluent material in the receptacle A, and G is' any suitable'means for subjecting one side of said surface't'o a pressure different from that on the oppositeside thereof and causonate to adhere to the outer si e of said portion of the body and tof maintain the sameon said portion when the bodyhas been moved to bring out of the liquor.

The body B referably consists of a revoluble cylinder ormed with closed end-walls rounded by a perforated ring 6 formed :of

suitable material. The means C preferably consists of a conduit or passage 0 opening into the interior of the body B, for subjecting the inner side of its surface 6 to a pressure lower than that on the exterior of said surface, and a second conduit 0 which is provided with a valve 0 and is connected to the conduit or passage 0 and to a suitable vacuum pump not necessary to herein illustrate an conduits or passages c which generally extend through the trunnions b, b, are formed with downturned ends 0 arranged adjacent to each other, and are each connected to conduits c.

The filtering body or carrier B may be revolved by any suitable driving mechanism and is here illustrated as connected by gears d d to a drivin shaft D which is provided The gear d is so constructed that the number of its teeth is not a submulti le of the number of the teeth of the ear and said gear (1 is preferably moved lengthwise on the shaft D out of engagement with the gear yoke and guide form no part of my present invention, it is unnecessary to herein specificsaid portion describe. I preferably use two with tight and oose driving pulleys d 01 ally illustrate and describe the same. The dried material is removed'from the filtering body B by a knife E which may be stationary, if desired although it is fireferably moved constantly and automatica y toward and away from the driving or filtering surface of said body.

The knife E is preferably'mounted on a support 6 pivoted at e to the wall of the receptacle and provided w1th suitable ad- 'usters F which are movable in lugs e proectin from the su port 6, and engage stepshoul ers a forme upon said rece tacle A for preventing undue approach of t e knife E to the drying or filterlng surface, 6. Said knife E is also provided with a shield 6 extending laterally over the adjacent edge of the ,rece tacle A beyond the edge of the knife E adjacent to the filtering body. When the drying or filtering surface of the bod B is bein washed, as presently descri ed, the kni e support e is rocked from its normal position in the direction ,indicated by arrow 1, Fig. 3, until a shoulder e thereon engages a sto -face a and the shield c then operates to irect to the interior of the receptacle A any material dropped there- 11 on.

The means for continuously and automatically moving the knife E toward and away from the drying or filtering surface of the body B may be of any desirable form, size, and construction, but preferably consists of an arm F and a lever f which connect the support e to the frame it of an a 'tator, presently described, for the materla to be dried. The arm F is ivoted at F to the lower end of the kni e-support e and is loosely connected to one side of it's pivot to one of the adjusters F so as to slight y move lengthwise of said adjuster. One end of the lever j is 'mounted on a pivot j which is secured in the slot 11. formed in the frame it of the agitator, presently described; and said lever is provlded at its free end with shoulders f for detachably engaging a shoulder F projecting from the adjacent end of the arm F. The agitator frame It is constantly actuated as presently described,

and, consequently, the arm F and the lever f connecting the knife-support to said frame effect a continual rocking of the knife-support. The knife E is t us constantly and automatically moved toward and away from the. drying or filtering surface I), and removes the material therefrom in corrugations which are rarely coincident owing to the ratio previously pointed out of the number of teeth in the gears of d. Consequently the liability of the formation of a glazed ring or crust of material upon the drying or filtering surface of the body B is greatly reduced.

Although the knife E is continuously moved toward and away from the drying or filtering surface of the body B it is advis-- able to occasionally eject the material from theperforations or interstices of said surface. My im roved drying apparatus is therefore rovlded with conduitsc which are form with suitable valves 0 are connected to a suitable pressurepump or other device unnecessary to herein illustrate and describe and dischar e a suitable fluid as air into the conduits a or subjecting the inner side of the surface I) to a ressure higher than that to which said sur ace is subjected during the operation of the filtering body. This higher pressure discharges the material from the perforations or interstices of the surface I), and during this operation the valves 0 are closed, the knife-supporte is swun backwardly from the body B, and the shiel e operates, as previously described, to deflect to the interior of the receptacle A any material dropped thereupon.

After the materlal is e ected from the perforations or interstices of the surface 6 1t is usually advisable to thoroughly was or clean said surface, and, consequently my improved apparatus is provided with suitable means for effecting this operation. This means preferabl consists of a perforated conduit G ext/en ing transversely across and above one side of the body B and having its opposite ends connected to inlet-pipes g g which receive the washing fluid and are connected by a branch pipe g to a feed-pipe g mounted on any suitable support 9 and provided with a valve 9. It IS often advisable when drying certain materials, as bicarbonate of soda, to wash the material adhering to the surface 6' before the same is dried, in order to obviate its contamination b salts in solution in the mother-liquor, and'ln that event the conduit G constantly discharges a suitable washing fluid, as pure water, upon the material adhering to said surface I). The feeding chamber of conduit G may also be used for discharging any suitable solution upon the material adhering to the 'surface I) when it is desired to mix another material therewith.

The material to be dried may be agitated by any suitable means, here illustrated as an agitator H consisting of an oscillating frame H, previously mentioned, usually mounted on the trunnions b or the bearings supporting said trunnions, longitudinal bars 12. arranged concentric with the surface b between said surface and the adjacent Wall of the receptacle A, and cross-bars h interposed, one above and in advance of the other, between the bars 72, and movable in proximity to the surface 6' in a plane sub stantially parallel with the adjacent face thereof. The agitator H is preferably actuated by eccentrics d mounted on the shaft D, previously described, and connected by links d to the frame 72.. Said agitator prefeaaaec erably supports a gage I which removes any excess of material from the .surface I), and is referably mounted upon a pivot a providgd with an arm i connected to one end of a rod 1 The opposite end of the rod 1 is adjustable lengthwise in a lug 12. upon the agitator frame It for rocking the gage I on its pivot z and governing the amount of the excess of adhesive the surface I).

The operation of my improved drying apparatus will now be readily perceived upon reference to the foregoing description and the accompanying drawing, and it will be particularly noted that I do not herein limit myself to the exact construction and arrangement of any of the component parts thereof as the same may be materially varied without departing from the spirit of my invention.

What I claim is 1. A drying apparatus comprising a receptacle for receiving the moist material to of its filterin be dried, a cylindrical filterin body having a @rtion of its filtering surface movable into engagement with said moist material, a conduit opening from one side of said surface for subjecting the same to a pressure different from that on the opposite side thereof, and thereby maintaining a portion of the material on said opposite side and drying the same, means for removing the material from said opposite side, and means for wa'shin the material maintained on said opposite si e before its removal therefrom, substantially as and for the purpose described.

2. A drying apparatus comprising a receptacle for receiving the moist material to be dried, a filtering body having a portion surface movable into engagement with sand moist material, a pipe opening from one side of said surface for subjecting the same to a pressure different from that on the opposite side thereof, andthereby maintaining a portion of the material on said opposite side and drying the same, means for removing the material from said opposite side, a perforated conduit extending across said opposite side and located to discharge upon that dportion of the filtering body moving tower the removing means, and means for discharging a fluid within the pipe, substantially as and for the purpose set forth.

3. A drying apparatus comprising a receptacle for receiving the material to be dried, a filtering body having a portion of away from the filtering body,

its surface movable into engagement with the material, a knife for removing the material from said surface, and means for positively moving the knife toward and substantially purpose specified. I

rying apparatus comprising a reas and for the material removed from ceptacle for receiving the' material to be due a revoluble filtering body having a portion of its surface movable into engagement with the material, a knife for removmg the material from said surface, and driving means for simultaneously revolving the filtering body and moving the knife toward and away from said body, substantially as and for the purpose described.

drying apparatus comprising a receptacle for receiving the material to be dried, a filtering body having a portion of the surface movable into engagement with the material, a knife for removing the material from said surface, means for automatically moving the knife toward and away from the filtering body, and means for limiting the movement of the knife toward said bod substantially-as and for the purpose set forth.

6. A drying apparatus comprising a receptacle for receiving the material to be dried, a filtering body having a portion of its surface movable into engagement with the material, a knife for removing the material from said surface, and a pair of gears connected to said knife for moving the same toward and away from the filtering body, said gears being so constructed that the number of the teeth of one is not a submultiple of the number of the teeth of the other, substantially as and for the purpose specified.

7. A drying apparatus comprising a receptacle for receiving the material to be dried, a filtering body having a portion of its surface movable into engagement with the material, means for subjecting one side of said surface to a pressure different from that on the opposite side thereof, a knife for. removing the material from said opposite side of the filtering surface, a movable support for the knife, and means for actuating the support and moving the knife toward and away from said filterin surface for removing the material there rom, substantially as and for the purpose described.

8. A drying apparatus comprising a receptacle for receiving the material to be dried, a filtering body having a portion of its surface movable into engagement with the material, a knife for removing the material from said surface, and a movable support for the knife having a shield extending laterally beyond the face of the knife adjacent to the filtering body, substantially as and for the purposes set forth.

9. A drying apparatus comprising a receptacle for receiving the material to be dried, a filtering body having a portion of its surface movable into engagement with thetmaterial, a knife for removing the material from said surface, a movable support for the knife, an actuating arm adjustably connected to the support, and means for automatically operating the actuating arm,

substantially as and for the purpose de-" scribed.

10. A drying the material to be 'dried, a filtering body having a portion of its surface movable into engagement with the material,,a knife for removing the material from said surface, a movableasupport for the knife, and an actuating arma ,p1voted to the sup ort and loosely connected thereto at one side of its pivot, substantially as and for the purpose set forth. a

11. A drying apparatus comprising a receptacle for receiving the material to. be dried, a filtering body having a portion of itssurface movable into engagement with the-material, a knife for removing the material from said surface, a movable support for the knife, provided with an actuating arm, and a lever detachably connected to the actuating arm for operating said support, zubstantially as and for the purpose speci- 12; A drying apparatus comprising a rece tacle for recelving the material to be dried, a filtering body having a portion of its surface movable into engagement with the material, a knife for removing the material from said surface, a movable frame, and a lever adjustably connected to the frame, and-connected-to the knife for moving the same toward and away from said surface, substantially as and for the purpose described.

13. A drying apparatus comprising a rece tacle for receivin the material to be dr1ed,a filtering body aving a portion of its surface movable into engagement with the material in the receptacle, a knife for'removing the material from said surface, a movable support for the knife, an adjuster for varying the position of said support, and means for positively moving said support and forcing the knife toward and away from the filtering body, substantially as and for the purpose set 'forth.

greater speed than 14. A drying apparatus comprising a receptacle for receiving, the moist material to be dried, a filtering body partially surrounded by -a drying fluid and having a portion of its surface movable into engagement with said material,means for withdrawing a given amount by /weight of the liquid in the moist material and of the drying fluid from the inner side of the filtering surface at a a similar amount of said liquid and dryin fluid feeds through the filtering surface rom the outer side thereof and thereby maintaining a portion of the material on, said filtering surface and drying said portion of the material, an agitator movable 1n the moist material in the receptacle, in a plane in roximity to the surface of the filtering bo y incontact with said material, and means for removing the dried material from the filterin surface ofsaid filtering body, substantial y as and for the purpose s cified.-

15. A ryingapparatus comprising a receptacle for receivlng' the material to be dried, a revoluble filtering body having a portion of its periphery movable into engagement with the material, an agitator movable in opposite directionsin the moist material in the receptacle in a lane substantially concentric with the sur ace of the filtering body in contact with said material and 1n proximity to said surface, and a frame for supporting the agitator, said frame being movable on substantially the same axis as the filtering body, substantially as and for the purpose described.

1-6. A drying apparatus comprising a receptacle for receiving the material to be dried, a revoluble filteringbody having a portion of its periphery movable into engagement with the material, an agitator movable in o posite directions in the moist material in t e receptacle, in a lane substantially concentric with the sur ace of the filtering body in contact with said material and in proximity to said surface, and driving means connected to the revoluble filtering body and the agitator for simultaneously actuatin said filtering bod and agitator, substantlally as and for t e purpose set forth.

17. A drying apparatus comprising a 'rece tacle for recelving the material to be drled, a filtering body provided with a trunnion and having a portion of its surface movable into engagement with the material, and a movable a itator mounted on the trunnion, substantia ly as and for the purpose specified.

18. A ceptacle for receiving the material to be drled, a filtering body having a portion of its surface movable into engagement with the material, an oscillating frame, and an agitator supported by the frame and movable 1n the material in the receptacle, said agitator consisting of longitudinal bars and cross-bars interposed one in advance of the other between the longitudinal bars substantially as and for the purpose described.

19. A drying apparatus comprising a receptacle for receiving the material to be "dried, a filtering body having a portion of its surface movable into. engagement with the material, and an automatically movable gage for removing the excess of material from said surface, substantially asand for the purpose set forth.

20. A drying apparatus comprising a re ceptacle for receiving the moist material to be dried, a filtering body partiallysurrounded by a drying fluid and having a portion of its surface movable into en agement with said material, means for withdrawing drying apparatus comprising a re-.

a given amount by weight of the liquid in the moist material and of the drying fluid from the inner side of the filtering surface at a greater speed than a similar amount of said liquid and drying fluid feeds through the filtering surface from the outer side thereof and thereby maintaining a portion of the material on said filtering surface and drying said portion of the material, a gage movable in the moist material in the receptacle in a plane substantially concentric with the surface of the filtering body in contact with said material and in proximity to said surface, and means for removing the dried material from the filtering surface of said filtering'body, substantially as and for the purpose specified.

21. A drying apparatus comprising a receptacle for receiving the material to be dried, a filtering body having a portion of its surface movable into engagement with the material, an automatically movable gage for removing the excess of material from said surface, and an oscillatin frame for supporting said gage, substantlally as and for the purpose described.

22. A drying apparatus comprising a receptacle for receiving the material to be dried, a filtering body having a portion of its surface movable into engagement with the material, an automatically movable gage for removing the excess of material from said surface, an oscillating frame for supporting said gage, and means for adjusting the position of the gage, substantially as and for the purpose set forth.

In testimony whereof I have hereunto signed my name in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga in the State of New York, this 7th day of February, 1896.

EDWARD N. TRUMP.

Witnesses:

K. H. THEOBALD, E. A. WEISBU'RG. 

